Barely There Concealers Wirefree #4584 100% Nylon bras closure Outer Cup, Back, Center Belt: 79% Nylon, 21% Spandex. Cup Linings: 100% Plyester. Cup Pad: 100% Polyesterurethane Foam. Concealing petals provide no show-through Average figure underwire Imported Hand Wash, Line Dry